The invention discloses planting and baking methods for improving the phenylalanine content of flue-cured tobacco. The planting method comprises the specific steps of tobacco seedling transplanting, middle ploughing and weeding, gradual ridging, and gradual topdressing. The baking method comprises the specific steps of recovery, pole dividing, stove feeding and baking, specifically, tobacco leavesfed into a stove are baked, after the yellowing stage, the color fixing period and the dry reinforcement period, and baked tobacco leaves are obtained. According to the methods, on the one hand, thenitrogen application rate of the tobacco leaves is controlled during cultivation, synthesis of phenylalanine content of the tobacco leaves is effectively improved,on the other hand, the baking time iscontrolled, the baking technology is optimized, the phenylalanine in the tobacco leaves ismetabolized and transformed to generate benzyl alcohol, phenethyl alcohol, benzaldehyde, phenylacetaldehyde and other phenylalanine-kind aroma substances, so that the fragrant gas volume in the baked tobacco leaves is improved, the quality of tobacco leaf raw materials is improved, and great significance isachieved to improve the flavor of cigarettes.